Louis enricht



UNITED STATES PATENT OFFICE.

LOUIS ENRICI'I'I, OF NEW YORK, N. Y., ASSIGNOR TO THE STEREO-RELIEFDECORATIVE COMPANY, OF SAME PLACE ART OF MAKING .PLASTER CAS'TS.

SPECIFICATION forming part of Letters Patent No. 450,288, dated. April14, 1891.

Application filed July 31,1890. Serial No. 360,566. (No specimens.)

To all whom it may concern.-

Be it known that I, LOUIS ENRICHT, a citizen of the United States,residing at New York, in the county and State of New York, have inventednew and useful Improvements in the Art of Making Plaster Casts, of whichthe following is a specification.

This invention relates to plaster and other casts; and it consists inmeans for rendering the same impervious to atmospheric influences, ashereinafter fully described in the following specification and claim.

In carrying out the inventionl take of limewater about five gallons, oflinseed-oil about three gallons, of oxide of manganese about fourounces, and of borax soap about six ounces. I prefer to have the soap inthe form of thin shavings. These ingredients are mixed together and areboiled until they are thoroughly dissolved and incorporated with eachother. The composition thus produced is applied to the surfaces ofplaster or other similar casts for the purpose of rendering the sameimpervious to atmospheric influences.

The method which I prefer for applying the composition consists inimmersing the cast or article which is to be treated in the compositionas in a bath. The composition may also be applied to the surface of thecast by means of a soft brush or a cloth.

NVhat I claim as new, and desire to secure by Letters Patent, is

The composition for treating plaster and other casts, consisting oflime-water, linseedoil, oxide of manganese, and borax soap,produced inthe proportions and in the manner substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

LOUIS ENRIOHT.

\Vitnesses:

WM. (3. HAUFF, E. F. KASTENHUBER.

